As for Dynamics CRM Vega, this is a release focusing on Microsoft Dynamics CRM Core product. The Fall Wave release Vega applies to both CRM Online and CRM On-Premise.

So Vega is apparently going to be officially named: CRM 2015. It will be released before end of this year (Q4 2014). It is expected to include some core product features in Dynamics CRM that many have been waiting for!
New features and enhancements in Vega Dynamics CRM 2015 are: